Pesticide Drift V. Vertical Drift from Aerial Spray Applications1

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Vertical drift, or upward loss of aerially applied sprays, was measured using cascade air samplers suspended from helium-filled weather balloons. Measurable quantities of the added fluorescent dye were collected from 1- to 150- foot altitudes 82 to 660 feet downwind. Generally the greater the altitude the less the drift, except at the station nearest application, where the greatest drift was detected in the highest sampler. Twenty-four percent of the drift spray volume was in the respirable particle size. In two tests the on-target deposits were 49.6% and 84.2%, the differences correlating with air movement during application.

Document Type: Research Article

Publication date: April 1, 1972

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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